<h2>My Heroes</h2>
  <ul class="heroes">
    <li *ngFor="let hero of heroes" (click)="onSelect(hero)" [class.selected]="hero === selectedHero">
      <span class="badge">{{hero.id}}</span> 
      <span>{{hero.name}}</span>
      <button class="delete" (click)="delete(hero); $event.stopPropagation()">x</button>
      <!-- each hero goes here-->
    </li>
  </ul>
  <div *ngIf="selectedHero">
    <h2>
      {{selectedHero.name | uppercase}} is my hero
    </h2>
    <button (click)="gotoDetail()">View Details</button>
  </div>
  <div>
    <label>Hero name:</label> <input #heroName />
    <button (click)="add(heroName.value); heroName.value=''">Add</button>
  </div>
  